Composite of Strip-shaped ZIF-67 with Polypyrrole: A Conductive Polymer-MOF Electrode System for Stable and High Specific Capacitance

Sajid ur Rehman,1

Rida Ahmed,2

Kun Ma,1

Shuai Xu,1

Tongxiang Tao,1

Muhammad Adnan Aslam,1

Muhammad Amir3

Junfeng Wang1,4*Email

1CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.

2School of Physics & Material Science, Anhui University, Hefei, 230601, China.

3Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Chinese Ministry of Education, School of Physics, Dalian University of Technology, Dalian, 116024, China.

4Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, China

Abstract

Strips like ZIF-67 have been prepared by the wet chemical method and polypyrrole (PPy) has been deposited on the surface through the in-situ polymerization method and named as [email protected] The structure and morphology of prepared samples were observed by Scanning electron microscope (SEM), Transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS). Further, the prepared samples (PPY, SZIF-67 and [email protected]) were used as electrode active materials of supercapacitors. Compared with PPy and SZIF-67, the results show that composite [email protected] has enhanced electrochemical performance, high rate capability and good cycle stability. The results indicate that [email protected] can become the next generation electrode materials for high-performance flexible supercapacitors.

Composite of Strip-shaped ZIF-67 with Polypyrrole: A Conductive Polymer-MOF Electrode System for Stable and High Specific Capacitance